Touchable Pro slows down my iMac

Touchable Pro slows down my iMac

When I use touchable pro my Ableton cracks and hangs. The sound output is no longer guaranteed. I only have 6 tracks with a few Waves clips. Normally this is my fast Studio iMac and I don’t know this behavior at all. I usually do big studio productions with the iMac - but as soon as I use Touchable pro the sound output is disturbed as if the computer was 20 years old. So I can not use touchablePro - what can I do??

greets from Dortmund